serializers.py 文件源码

def _is_protected_type(obj):
    """
    True if the object is a native data type that does not need to be serialized further.
    """
    return isinstance(obj, six.string_types + six.integer_types + (
        types.NoneType,
        datetime.datetime, datetime.date, datetime.time,
        float, Decimal,
    ))